Design of Sensor Data Flow for Ship Information System

摘要

In this paper, the design principles of sensor data flow in ship information system (SIS) structure are researched. In order to save communication resources to achieve the practicable maximum without sacrificing the expected performance of system, an observability analysis-based setting method is proposed to shorten the length of each sensor data flow. In addition, according to the determined data flow length, a scheduling algorithm is presented to set the content of data flow as well. This scheduling algorithm is based on a double-index evaluation method, which includes the variation of sensor data during assigned steps, meanwhile the deviation between estimated value and real value of observation is considered as well. Besides these, algorithm and hardware realization examples are provided at the end of this paper.